Brendon John Grylls (born 5 June 1973) is an Australian politician who was a National Party member of the Legislative Assembly of Western Australia from 2001 to 2017.

The Nationals won the overall balance of power, and Grylls subsequently chose to support Colin Barnett as premier, allowing the Liberal Party to form a minority government.

[3][4] His political career began in November 2001 when he contested and won a by-election caused by the retirement of the member for Merredin, former Nationals leader Hendy Cowan.

Unlike past Liberal-National Coalitions in Western Australia, however, the National ministers had only limited cabinet collective responsibility, and reserved the right to break with the Liberals on matters affecting their electorates.

He vacated Central Wheatbelt at the 2013 state election, and contested the traditionally Labor-held seat of Pilbara against Labor's Kelly Howlett, who had replaced the retiring sitting member Tom Stephens.

[7] He retook the leadership in August 2016, and subsequently introduced a plan to tax BHP Billiton and Rio Tinto $5 for every tonne of iron ore mined (as opposed to $0.25 currently).

[9][10] Grylls was defeated in Pilbara by the Labor candidate, Kevin Michel, and was subsequently replaced as leader of the National Party by Mia Davies, who had earlier succeeded him in Central Wheatbelt.